Ball-bearing.



G. O. LEOPOLD.

BALL BEARING.

APPLICATION FILED MAR. 12, 190B.

Patented Jan. 5, 1909.

I ICC CTT CZ 0 31.

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%[76665299 Wm {M UNITED STATES PATENT oFFroE.

GEORGE O. LEOPOLD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO N ORTH'BROS. MFG

' 00., OF PHILADELPHIA, PENNSYLVANIA,

A CORPORATION OF PENNSYLVANIA.

BALL-BEARING.

Specification 01' Letters Patent.

Patented Jan. 5, 1909.

To all whom itmay concern:

Be it known that I, GEORGE O. LEOPOLD, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Ball Bearings, of which the following is a specification.

The object of my invention is to so construct a ball bearing that the two parts between which the balls are located can be so spaced in reference to each other and to the balls, that the balls will fit the races at all times and that the wear canbe readily taken up and the parts held rigidly in the position to which they are adjusted.

My invention is particularly adapted for use 1n connection with thrust bearings used on small hand tools, such as breast drills, ratchet tools and other devices, but it will be understood that it can be used in other places Without departing from the essential features of the invention.

In the accompanying drawing :Figure 1, is a vertical sectional view illustrating my improved ball bearing attached to one end of a breast drill frame; and Fig. 2, is a sectional plan view on the line 2-2, Fig. 1. A is a portion of the frame of a breast drill in the present instance.

B is the s indle of the drill which is driven in any suita le manner. X

D IS the base section of the ball bearing having an extension (1, which is confined in the frame A by the screw a.

E is a bearing plate secured to the spindle B by a pin 6 or other fastening. The spindle extends through both the plate E and the base section D, as shown.

11, '1', are the balls mounted in annular grooves d and e in the two parts D and E, res ectively.

Cl is a sleeve having a screw threaded ortion 0 ada ted to the screw threaded periphcry 11 of t e base section D, and this sleeve has an inwardly extending flange c resting back of the bearing plate E. On turning this sleeve Oupon the screw thread of the base section D 1n one direction, the plate E is moved towards the base section D, and on turning it in a reverse direction the plate will be free to move in the opposite direction.

Thus by adjusting the sleeve. the parts can be held in the race-ways with any amount of pressure and any lost motion due to wear can e taken up when desired.

In order to hold the sleeve 0 in the position to which it is adjusted,- I mount on the threaded periphery d of the base section a threaded ring F, which can be turned and forced in close contact with the end of the sleeve 0 when it is desired to lock the sleeve in Position after adjustment.

claim 1. The combination in a ball bearing, of a base'portion having a screw threaded periphery and provided with an extension projecting into a supporting structure, with a bearing plate, a series of balls between the base and the bearing late, a sleeve having a threaded ortion fittmglthe threaded portionof the Base andalso aving an internal flange engaging the plate, a spindle passin through the base portion and the bearing p ate, with means for fixing said spindle to the plate outside the sleeve.

2. The combination with a frame of a bearing, a base portion secured to the frame, said base portion having a race-Way in one end and having a threaded periphery, with a .bearin plate also having a race-way in line with tl ie race-Way of the base, a s indle secured to the plate and extending t rough it and the base, a series of balls mounted in the race-ways between thebase and the plate, a sleeve having a threaded portion ada ted to the threaded portion of the base and aving an internal flange extending over the back of the plate, and a threaded ring fitting the threaded portion of the base and adapted to rest a ainst the end of the sleeve so as to lock it in t e position to which it is adjusted.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

Jos. KLEIN, WM. A. BARR. 

